PIC17C7XX Datasheet, PDF (58/328 Pages) Microchip Technology – High-Performance 8-Bit CMOS EPROM Microcontrollers with 10-bit A/D

PIC17C7XX
FIGURE 8-3: TLRD INSTRUCTION
OPERATION
TABLE POINTER
TBLPTRH
TBLPTRL
TABLE LATCH (16-bit)
TABLATH TABLATL
TLRD 1,f
TLRD 0,f
Data
Memory
Program Memory
f
1
FIGURE 8-4: TABLRD INSTRUCTION
OPERATION
TABLE POINTER
TBLPTRH
TBLPTRL
TABLE LATCH (16-bit)
TABLATH TABLATL
3
TABLRD 1,i,f
Data
Memory
3
TABLRD 0,i,f
Program Memory
f
1
Prog-Mem
(TBLPTR)
2
Step 1: 8-bit value, from TABLAT (16-bit) high or
low byte, loaded into register 'f'.
Step 1: 8-bit value, from TABLAT (16-bit) high or
low byte, loaded into register 'f'.
2: 16-bit value at Program Memory (TBLPTR)
loaded into TABLAT register.
3: If “i” = 1, then TBLPTR = TBLPTR + 1,
If “i” = 0, then TBLPTR is unchanged.
DS30289A-page 58
© 1998 Microchip Technology Inc.